.boss{
    /*此行代码可以单独设置组件的body属性 不会影响到其他页面 */
    position: absolute;
    height: 100%;
    width: 100%;
    top:0;
    left: 0;
    overflow-y: auto;
    /* background-color: black; */
    /* background:url(../assets/2.jpg) no-repeat; */
    background-size:100% 100%;
}
.boss-a{
    width: 1280px;
    height: 575px;
    margin: 0 auto;
    /* background: red; */
    background-color:rgba(229, 233, 242, 0.705);

}
.bo-head{
    width: 100%;
    height: 50px;
    background: rgb(50,64,87);
    border-radius: 5px 5px 0px 0px;
    position: relative;
}
.bo-head>img{
    position: absolute;
    width: 300px;
    height: 50px;
    left: 30px;
}
.bo-left{
    width: 300px;
    height: 525px;
    background: white;
    position: relative;
    float: left;
}
.bo-left>ul{
    position: absolute;
    color:rgb(50,64,87);
    top: 30px;
    left: 2px;
}
.bo-left>ul>li{
    width: 300px;
    height: 50px;
    /* background: red; */
    margin-bottom: 30px;
    line-height: 50px;
    cursor: pointer;
    border-radius: 2px;
   

}
.bo-left>ul>li>h4{
    margin-left: -90px;
}
.bo-left>ul>li:hover{
    background: rgb(50,64,87);
    color: white;
}
.bo-left .bo-three{
    background:rgb(50,64,87);
    color: white;
}
.bo-center{
    width: 940px;
    height: 480px;
    background: rgb(255, 253, 253);
    float: left;
    margin-left: 20px;
    margin-top: 20px;
}
.bosshz{
    position: absolute;
    width: 200px;
    height: 50px;
    /* background: red; */
    right:30px;
}
.bosshz>img{
    width: 45px;
    height: 40px;
    border-radius: 20px;
    margin-top: 5px;
}
.bosshz>sapn{
    color: white;
    margin-left: 10px;
    line-height: 50px;
}